/*
 * Copyright (C) 2018 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.unixdomainsockets;

import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import javax.net.SocketFactory;

import jnr.unixsocket.UnixSocketChannel;

/**
 * Impersonate TCP-style SocketFactory over UNIX domain sockets.
 */
public final class UnixDomainSocketFactory extends SocketFactory {
    private final File path;

    public UnixDomainSocketFactory(File path) {
        this.path = path;
    }

    @Override
    public Socket createSocket() throws IOException {
        UnixSocketChannel channel = UnixSocketChannel.open();
        return new TunnelingUnixSocket(path, channel);
    }

    @Override
    public Socket createSocket(String host, int port) throws IOException {
        Socket result = createSocket();
        result.connect(new InetSocketAddress(host, port));
        return result;
    }

    @Override
    public Socket createSocket(
            String host, int port, InetAddress localHost, int localPort) throws IOException {
        return createSocket(host, port);
    }

    @Override
    public Socket createSocket(InetAddress host, int port) throws IOException {
        Socket result = createSocket();
        result.connect(new InetSocketAddress(host, port));
        return result;
    }

    @Override
    public Socket createSocket(
            InetAddress host, int port, InetAddress localAddress, int localPort) throws IOException {
        return createSocket(host, port);
    }
}
